One intuitive workspace to manage your Emails, To-do's, Projects, Sales, Client Service, CRM and Teamwork ... right in GMAIL!
Followup.cc - FollowUp for email is a lightweight productivity suite that keeps your conversations and tasks from slipping through the cracks. Set perfectly timed reminders that arrive at the top of your inbox, right when you need them.
Trello - Infinitely flexible. Incredibly easy to use. Great mobile apps. It's free. Trello keeps track of everything, from the big picture to the minute details.
Gmelius - Gmelius is the first collaboration platform designed for G Suite and your company's daily tools.
Drag for Gmail - Transform Gmail into organized To Do lists (like Trello)
FollowUpThen - The simplest way to schedule an email reminder
KanbanMail - A Kanban board for your emails.